{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5fcd5fd5c9bcfca6a1e9af255543b8cbbda6a53be3471628032d8cc26806bd5a",
    "signature": "0xf531718c644dddb0e4f8bcb008bbdfc5a6ba8ab7a799498dba02cf5d6c88212d1e1b29f31f1378e1a9f57f810962cf785a2d3fb0984b20dfb1492893a5ea331c1c",
    "signer": "0xdeafB8E9B9465ed291AB77a5f64d485CDbc8c6Ae",
    "userId": "348224502"
  }
}